#__Author__  = white

data ={
    'beijing'  :{
        "changping":{
            "shahe":["oldboy","test"],
            "tiantongyuan":["lianjia","woaiwojia"]
        },
        "chaoyang":{},
        "haiding" :{},
    },
    'shandong' :{},
    'guangdong':{
        "dongguan":{},
        "changshu":{},
        "foshan"  :{},
    },

}

exit_flag = False
for i in data:
    print(i)
while not exit_flag:
    chioce =input("chioce")
    for i in data[chioce]:
        print(i)
    while not exit_flag:
        chioce1=input("chioce1:")
        for i in data[chioce][chioce1]:
            print(i)
        while not exit_flag:
            chioce2=input("chioce2:")

            for i in data[chioce][chioce1][chioce2]:
                print(i)
                if chioce == 'q':
                     pass